This investigation aimed to study the response of chili to the application of biochar and vermicompost, and to find the combination that produced the best growth and yield of chili. The treatments were the application of five different soil ameliorant, i.e. 100% biochar, 75% biochar + 25% vermicompost, 50% biochar + 50% vermicompost, 25% biochar + 75% vermicompost, 100% vermicompost, and 100% NPK. The was arranged in a randomized block design with four replication. The results showed that the application of biochar along with vermicompost could increase the growth and yield of chili. The use of 25% biochar + 75% vermicompost resulted in the highest growth and yield, indicated by average fruit number of 58.75 per plant and fruit weight of 173.71 g per plant, or 6.95 tonha-1. Compared to the national productivity of red chili, the productivity achieved in this study is still low.
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